Showing structure for (9r,10r,11s)-11,14-dihydroxy-4,5,15,16-tetramethoxy-9,10-dimethyltricyclo[10.4.0.0²,⁷]hexadeca-1(12),2(7),3,5,13,15-hexaen-3-yl (2z)-2-methylbut-2-enoate